Journal
JOURNAL OF FORAMINIFERAL RESEARCH
Volume 32, Issue 4, Pages 440-447Publisher
ALLEN PRESS INC
DOI: 10.2113/0320440
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A complex array of branching and anastomosing granular pseudopodia (reticulopodia) is thought to be a primary feature of the protistan phylum Granuloreticulosa. This essay summarizes the results of detailed structural and behavioral analyses of reticulopodia from representative species of naked, soft-shelled, and unilocular agglutinated Foraminifera. Promiscuous plasma membrane fusion, experimentally demonstrated here for the first time, together with the presence of tubulin polymorphs and a unique class of ellipsoid vesicles, form a suite of phenotypic characters that further define the suprageneric status of these protists. A theoretical framework for exploring the evolution of reticulopodia is also presented.
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